DS1990A

9 of 10

ABSOLUTE MAXIMUM RATINGS*

Voltage on any Pin Relative to Ground

-0.5V to +7.0V

Operating Temperature

-40

°C to +85°C

Storage Temperature

-55

°C to +125°C

∗ This is a stress rating only and functional operation of the device at these or any other conditions

above those indicated in the operation sections of this specification is not implied. Exposure to

absolute maximum rating conditions for extended periods of time may affect reliability.

DC ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

NOTES

Logic 1

2.2

V

1,6

Logic 0

-0.3

+0.8

V

1

Output Logic Low @ 4 mA

0.4

V

1

Output Logic High

6.0

V

1,2

Input Load Current

5

µA

3

Operating Charge

30

nC

7,8

CAPACITANCE

(TA = 25°C)

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

NOTES

I/O (1-Wire)

100

800

pF

9

AC ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

NOTES

Time Slot

60

120

µs

Write 1 Low Time

1

15

µs

Write 0 Low Time

60

120

µs

Read Data Valid

exactly 15

µs

Release Time

0

15

45

µs

Read Data Setup

1

µs

5

Recovery Time

1

µs

Reset Time High

480

µs

4

Reset Time Low

480

µs

10

Presence Detect High

15

60

µs

Presence Detect Low

60

240

µs